The faith we have been given at salvation, was it a gift from God, or was it something we already had? "For through the grace given to me I say to everyone among you not to think more highly of himself than he ought to think; but to think as to have sound judgment, as God has allotted to each a measure of faith." Romans 12:3 I believe Paul here is instructing us by reminding us to be humble and take a look back at salvation and what was given to us then. We've gained nothing on our own, not even the ability to believe. "For by grace you have been saved through faith; and that not of yourselves, [it is] the gift of God; not as a result of works, so that no one may boast." Ephesians 2:8-9 Salvation, faith and our spiritual gifts are each the gift of God. I heard a message today stating that even our faith to believe is God's gift given to us, and that it is coupled together with our spiritual gift(s) given to us at the time of our salvation; "But to each one of us grace was given according to the measure of Christ's gift. Therefore it says, WHEN HE ASCENDED ON HIGH, HE LED CAPTIVE A HOST OF CAPTIVES, AND HE GAVE GIFTS UNTO MEN." Ephesians 4:7-8. Also in Romans 12 we see the parallel between the gift of faith, and the working of our spiritual gift(s) within the body of Christ, which is the exercise of our spiritual gifts for one anothers edification. Faith and our spiritual gift seem to be dealt in a measure, or some proportion was given to each of us. Both the gift to believe, or faith properly, and the giving and working of our spiritual gift both seem to have been given to us at salvation as a gift by the grace of God.